2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/226245In this talk the possibility of constructing geodesically complete inhomogeneous stiff fluid cosmologies is discussed. A family with infinite parameters is derived. A wide and easy to implement sufficient condition for geodesic completeness is shown.4 pp, ws-procsGeneral Relativity and Quantum Cosmologytext